General
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Target
CL_Installer1.0.exe
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Size
35.9MB
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Sample
240622-psafbssdjp
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MD5
20ca3507b2365af2c59c5878fcdf0f24
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SHA1
4d4ef88d11382ba25ec8ca836037002c777ddc57
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SHA256
5f8fb213357549825d6a12e530dbb984c988e1346b9c7ae86a9c8cb8906f5664
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SHA512
868dbf94b103a95e17f0a07c6ec84f655fb14d9217126cdc2848f0569953bf0cf1825c628e2f7c711fe7d301ec57578be8905071a39da2d89c23e3cee0b94763
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SSDEEP
786432:7JXtZ13U6AvThSY8nWWXcfMhz26IP7IbzJwIuJcwQ/Lj8pS31c6R8NoJSCxXsd:7Jh3U6AvThSY8W+12z7IbKIuOwULIpSG
Static task
static1
Behavioral task
behavioral1
Sample
CL_Installer1.0.exe
Resource
win7-20240611-en
Behavioral task
behavioral2
Sample
CL_Installer1.0.exe
Resource
win10v2004-20240611-en
Malware Config
Targets
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Target
CL_Installer1.0.exe
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Size
35.9MB
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MD5
20ca3507b2365af2c59c5878fcdf0f24
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SHA1
4d4ef88d11382ba25ec8ca836037002c777ddc57
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SHA256
5f8fb213357549825d6a12e530dbb984c988e1346b9c7ae86a9c8cb8906f5664
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SHA512
868dbf94b103a95e17f0a07c6ec84f655fb14d9217126cdc2848f0569953bf0cf1825c628e2f7c711fe7d301ec57578be8905071a39da2d89c23e3cee0b94763
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SSDEEP
786432:7JXtZ13U6AvThSY8nWWXcfMhz26IP7IbzJwIuJcwQ/Lj8pS31c6R8NoJSCxXsd:7Jh3U6AvThSY8W+12z7IbKIuOwULIpSG
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DcRat
DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.
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Suspicious use of NtCreateUserProcessOtherParentProcess
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Identifies VirtualBox via ACPI registry values (likely anti-VM)
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XMRig Miner payload
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Command and Scripting Interpreter: PowerShell
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
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Checks BIOS information in registry
BIOS information is often read in order to detect sandboxing environments.
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Checks computer location settings
Looks up country code configured in the registry, likely geofence.
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Executes dropped EXE
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Loads dropped DLL
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Adds Run key to start application
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Power Settings
powercfg controls all configurable power system settings on a Windows system and can be abused to prevent an infected host from locking or shutting down.
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Drops file in System32 directory
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Suspicious use of NtSetInformationThreadHideFromDebugger
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Suspicious use of SetThreadContext
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MITRE ATT&CK Enterprise v15
Execution
Command and Scripting Interpreter
1PowerShell
1Scheduled Task/Job
1Scheduled Task
1System Services
1Service Execution
1Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Power Settings
1Scheduled Task/Job
1Scheduled Task
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Scheduled Task/Job
1Scheduled Task
1